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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '88d32eb37b3f77c148907fb8f27a83f1fba47de1063b86e028010c6c63aa66d1' 
  AND token = 'MovyPep7BZ1aq2unzw/YYtj/9m4t+m7KYch3Gl9Dt2E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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