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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ea2c4b2f6b0119f0469e58b580466767eb72b750b882f7db610cb3b7cb507895' 
  AND token = 'EKKST4PqEhTQ19MUltu7JC/TK4TECrGLaJZOEq5R5u4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}