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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '85119559d003bb6f194245ae02a89a471fcdd3ba716d3a29b81a65dcb699fe67' 
  AND token = 'UKquA3nVHRS8IKsxNsu6617aJdSpzn+6HB9KpzWeoKM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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