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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '03381ea851355f22ff83f6e417a509c02b99c7e97fccbb21cd491f6e62acd072' 
  AND token = 'q5laI8RaRb6u6MISRXhXFX7TVFqyy6HQHF2OtnP4u3g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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