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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f384c17da429f2214f4e24e9b232fc15460338b1f9b9835e62e4175d27d4e21e' 
  AND token = 'Ab5UCVWyar/aXoP9toGQOPLwqUeLWe+VRyPjcPavax0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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