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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '96600a1648d28060b400c2394612e4ae4d8344be38bc73e9ed192f9ee86257c4' 
  AND token = 'svhEt/K1t5Vl1h+3AbieNBbqQb6IjRXf4HoqS7hopbw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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