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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'acce949f5450987fa592c590287392b776c830c9b27cffe7f428b50a0083a2e7' 
  AND token = 'SWhEzpu7bbJ1Eh3dIsr37cKfw0a7zuz+cQxuKO6+2RE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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