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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95c390cd7d22e38f1528d81b252c3d6217439cb0f54ec5cee6c929412297ab07' 
  AND token = 'fo5YbZnsvi4adhAtnDmYE8wJisfb5wscSiFoWz0XrKI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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