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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '98595c4bca9e64ed3e08a3dd5bc9a1417260226de26185f422ade9bd620b0472' 
  AND token = 'dz0ehLVTrz3Xr1GJPiPWh7s7oaUQAVAWveeyUunxuK4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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