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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '060e921188e9d730c47a3e4b2e8aa5fb06f75fb86ee6ef147a77814155aa385c' 
  AND token = 'il0SOCmF+F9EWeQW1JxInANxUQsfNyxrZ70l4yK1wNk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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