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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f46efeecc4c37e727bf87125f5a6e36aba3c30fc2cd8a9bdc63b52164d390eee' 
  AND token = 'OndmkZkg4x1+eg66Wewil3R0ejIliLllIwwPegJiOms=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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