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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '228800da39b7e0e5cc11861ec30af994024817cf63f8b2ce5d3b47ec7b36fe8c' 
  AND token = 'aMpp1N+VyviNimhIs3i0hAIyRb0IeQzGLwLupvKRRWE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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