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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f0f96c4302669163829512728718a5cf96ada5c7088d95a8913f406c9ea86d11' 
  AND token = 'xhDZtHklev6r212Zld3D7lswdvilJb2uE8h4UdgqYD8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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