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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd9fc18479be03bd47e5bc465dcdf87112077db09bbe14fc13f9300509ab52127' 
  AND token = 'SvMKYj0Kp0tow5pnY9sB2vgP9A2dvAcCZfS0yovSl/Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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