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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e34d467e65f6828d8897c9f93b783988a9c060f2cc3571e2901e7bd38c64b126' 
  AND token = 'J3EQ/D/Rz4M06116RII24U4WYuG5KlO4V4lPEd6CDQk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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