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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ea2d8c8f0250c126c5158beea90e24bae0f96ad2cd3f45b3d02419d9b71a5674' 
  AND token = 'jXod9VCs1jZSeCL8VfMtb1W4+L4egK6YfBItcQkJ2g8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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