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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cd895765f2e7359ab305c7c6055b23681d7556bca1c20f8698fe2561df38c33c' 
  AND token = '1olm3lJmShNTHCuOtvoxPgSOgqQ+Et/7Rp4eb1JEFrI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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